package com.itheima.controller;

import com.itheima.domain.Book;
import com.itheima.domain.PageBean;
import com.itheima.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

// TODO 3.1 设置当前控制器为REST风格的控制器类，开发对应的CRUD功能，并调用对应的业务层接口
@RestController
@RequestMapping("/books")
public class BookController {
    @Autowired
    private BookService bookService;

    //json参数
    @PostMapping
    public Result save(@RequestBody Book book) {
        boolean flag = bookService.save(book);
        return new Result(flag ? Code.SAVE_OK : Code.SAVE_ERR, flag);
    }

    //路径参数
    @DeleteMapping("/{id}")
    public Result deleteById(@PathVariable Integer id) {
        boolean flag = bookService.delete(id);
        return new Result(flag ? Code.DELETE_OK : Code.DELETE_ERR, flag);
    }

    //json参数
    @PutMapping
    public Result update(@RequestBody Book book) {
        boolean flag = bookService.update(book);
        return new Result(flag ? Code.UPDATE_OK : Code.UPDATE_ERR, flag);
    }

    //路径参数
    @GetMapping("/{id}")
    public Result getById(@PathVariable Integer id) {
        //int i=1/0;
        Book book = bookService.getById(id);
        Integer code = book != null ? Code.GET_OK : Code.GET_ERR;
        String msg = book != null ? "" : "数据查询失败,请稍后再试";
        return new Result(code, book, msg);
    }

    @GetMapping
    public Result getAll() {
        List<Book> bookList = bookService.getAll();
        Integer code = bookList != null ? Code.GET_OK : Code.GET_ERR;
        String msg = bookList != null ? "" : "数据查询失败，请重试！";
        return new Result(code, bookList, msg);

    }


    @GetMapping("/{currentPage}/{size}")
    //@RequestMapping(value = "/get",method = RequestMethod.GET)
    public Result getByPage(@PathVariable Integer currentPage, @PathVariable Integer size){
        PageBean<Book> bookPage = bookService.getByPages(currentPage, size);
        Integer code=bookPage!=null?Code.GET_OK:Code.GET_ERR;
        String msg=bookPage!=null?"":"数据查询失败,稍后再试";
        return new Result(code,bookPage,msg);
    }
}














